Recommended version: Windows 7 Updated v5 RC1 2020 Standard.iso Professional
If you do not need Hyper-V, Home Group, Parental Controls, Search, or System Restore, you can opt for the Debloat version instead. WMP, WMC, Gadgets, etc are also disabled in Debloat, however those can be re-enabled.
This is Windows 7 Home Basic, Home Premium, Professional, Ultimate, and Enterprise updated to multiple points, and some debloated ISOs too. These are the minimum to be usable (Platform update, SHA2, etc), 2016-09, and 2020-01. These ISOs also come with modded ACPI, NVMe, USB, and various network drivers. The network drivers are not integrated but instead located in a folder on the desktop due to not being critical to boot. These ISOs also have .NET 4.8, 6, 7, IE11, DX, VC++, and more. On the desktop is a folder with useful applications, tweaks, and more to make Windows 7 the best it can be!
v5 is a complete redo from v4. ISOs are back to being split due to the installer sometimes failing with everything combined. The new debloat ISOs are not too extreme, mostly just stuff you can disable anyways like gadgets, IE11, WMP, etc. Some other changes are new default login and desktop wallpapers. Thanks to jpegli the login background is a full 4k and high quality under 256KB without any authui.dll mods needed. Some security risk services are disabled by default too.